Adult echinoderms have five-point radial symmetry and include sea stars, sea urchins, and sea cucumbers. They are the largest phylum that has no freshwater or terrestrial (land-based) representatives.
Sea stars
 
 Cushion star, Culcita novaeguineae
 Granulated sea star, Choriaster granulatus
 
 
 
 Galathea sea star, Nardoa galatheae
 Linckia sea star, Linckia multifora
 Indian sea star, Fromia indica
 Noduled sea star, Fromia nodosa
 Red-spined brittle star, Ophiothrix purpurea
Sea cucumbers
 Pinkish sea cucumber, Holothuria edulis 
 
 Black-spotted sea cucumber, Pearsonothuria graeffei
 Black & white feather star, Cenometra bella
 Grinding sea urchin, Echinostrephus molaris
 
 
 Blue-black sea urchin, Echinothrix diadema
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Last modified 1 November 2024